The Law Firm of John P. Mahoney, Esq. Attorneys at Law, PLLC

The Law Firm of John P. Mahoney, Esq. Attorneys at Law, PLLC Protect and enhance your federal career with top-rated legal representation from the law firm of John P. Mahoney, Esq. Attorney at Law, in Washington, DC.

Protect your federal career with Preeminent-Rated & Award-Winning legal representation from The Worldwide Federal Employees Law Firm of John P. Mahoney, Esq., Attorneys at Law, in Washington, DC. John Mahoney is a top-rated attorney representing federal employees, unions, employee associations, contractors, and agencies in employment and national security law cases throughout the USA and around th

e world. If you’re facing a federal employment law issue, contact John P. for effective and proven representation. With 30 years of experience, we are dedicated to enforcing the rights of clients involved in employment discrimination and whistleblower retaliation cases, MSPB appeals, EEO complaints, EEOC cases, OFO appeals, OSC complaints, performance cases, proposed disciplinary actions, security clearance law appeals, and more. Whether you’re a federal employee, or a union, a contractor, or an agency representative, we can provide a personalized solution to your or your organization’s unique issue. Call today to schedule a phone consultation.

Facing a Security Clearance Appeal can be daunting. The Law Firm of John P. Mahoney, Esq., Attorneys at Law, PLLC, is he...
06/04/2026

Facing a Security Clearance Appeal can be daunting. The Law Firm of John P. Mahoney, Esq., Attorneys at Law, PLLC, is here to provide strategic legal support to help you defend your clearance and career. Reach out now! Visit https://www.attorneymahoney.com/s/c9d268Q

Whistleblowers are the guardians of government accountability, but they often face significant professional risks. If yo...
06/02/2026

Whistleblowers are the guardians of government accountability, but they often face significant professional risks. If you’ve made a protected disclosure and noticed a shift in your agency’s treatment of you, it may be retaliation. Our latest blog explores how to navigate these challenges.

Discover the essential rights and protections for federal whistleblowers.

05/29/2026

: How does wrongful termination happen?
A: This is when an employer illegally fires an employee. Protect yourself with the help of a trusted employment lawyer.

Talk to The Law Firm of John P. Mahoney, Esq. now! Visit https://www.attorneymahoney.com/s/812502l

Are you being investigated for workplace conduct by a federal agency or Congress? Protect your career and rights with ex...
05/27/2026

Are you being investigated for workplace conduct by a federal agency or Congress? Protect your career and rights with experienced legal representation. Talk to The Law Firm of John P. Mahoney, Esq., Attorneys at Law, PLLC now to know your options and next steps! Visit https://www.attorneymahoney.com/s/x4H7F3y

05/25/2026

Memorial Day is a moment for remembrance. We honor those who did not return.

For Title 38 professionals, the loss of employment can affect licensure. We fight to protect both your job and your prof...
05/21/2026

For Title 38 professionals, the loss of employment can affect licensure. We fight to protect both your job and your professional standing. The Law Firm of John P. Mahoney, Esq., Attorneys at Law, PLLC is here to help! Visit https://www.attorneymahoney.com/s/e3R1q2s

05/20/2026

At The Law Firm of John P. Mahoney, Esq., we have effectively represented thousands of federal government employees in disciplinary action, EEO discrimination, whistleblower retaliation, and security clearance cases for over 30 years. We can help you, too! Learn more about us now! Visit https://www.attorneymahoney.com/s/c4x0W8G

A notice of an Inspector General (OIG) interview or inquiry can be daunting. It's normal to feel worried. However, you s...
05/15/2026

A notice of an Inspector General (OIG) interview or inquiry can be daunting. It's normal to feel worried. However, you still have a chance to protect your career and your rights. Learn more here.

Facing an OIG inquiry as a federal employee? Learn how to protect your career.

Federal whistleblowers deserve justice. We specialize in representing clients who report wrongdoing while working in pub...
05/14/2026

Federal whistleblowers deserve justice. We specialize in representing clients who report wrongdoing while working in public service. Contact The Law Firm of John P. Mahoney, Esq., Attorneys at Law, PLLC to ensure your rights are protected. Visit https://www.attorneymahoney.com/s/U856x1C

Address

1300 Pennsylvania Avenue NW Suite 700
Washington D.C., DC
20004

Opening Hours

Monday 8:30am - 5:30pm
Tuesday 8:30am - 5:30pm
Wednesday 8:30am - 5:30pm
Thursday 8:30am - 5:30pm
Friday 8:30am - 5:30pm

Telephone

+12023503881

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